Electro-Voice EVC-VI EN54 Installation guide

Brand: Electro-Voice

Model: EVC-VI EN54

Type: Installation guide

This manual is also suitable for

Electro-Voice EVC-VI EN54 is a high-quality loudspeaker system designed for use in emergency voice evacuation applications. With its advanced features and reliable performance, it ensures clear and intelligible communication during critical situations. Here are some of the key capabilities of the Electro-Voice EVC-VI EN54:

EVC Variable‑Intensity Loudspeakers

EVC‑1122‑VIBTEN54 | EVC‑1122‑VIWTEN54

Installation manual

EVC Variable-Intensity Loudspeakers Table of contents | en 3

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Table of contents

Safety 4

Introduction 5

Planning the installation and aiming of the EVC-1122-VI loudspeaker 7

Installation 8

4.1 Tools list 8

4.2 Preparing the EVC loudspeakers for installation 8

4.2.1 Unpacking and inspection 8

4.2.2 Scope of delivery 8

4.2.3 Recommended pre-installation procedures 8

4.3 Working with mounting accessories 9

4.3.1 Mounting with a U-bracket 9

4.3.2 Mounting with rigging points 10

Rigging strength ratings and safety factors 12

Electrical connection 15

6.1 Connection 15

TK-150 transformer 18

Technical data 19

EN54-24 technical information 21

9.1 Reference points 22

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1 Safety

In this manual, the following symbols and notations are used to draw attention to special

situations:

Danger!

High risk: This symbol indicates an imminently hazardous situation such as “Dangerous

Voltage” inside the product. If not avoided, this will result in an electrical shock, serious

bodily injury, or death.

Warning!

Medium risk: Indicates a potentially hazardous situation. If not avoided, this may result in

minor or moderate injury.

Caution!

Low risk: Indicates a potentially hazardous situation. If not avoided, this may result in

property damage or risk of damage to the unit.

Notice!

This symbol indicates information or a company policy that relates directly or indirectly to the

safety of personnel or protection of property.

Refer to the Installation Manual for instructions.

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2 Introduction

EVC-1122-VI Variable Intensity loudspeaker

The EVC-1122-VI Variable Intensity loudspeaker is a two-way design with a unique compound

waveguide that can evenly cover a defined rectangular audience area with almost no variation

in sound quality and minimal change in level.

The high frequency section the EVC-1122-VI comprises a single 1¼-inch pure titanium dome

compression driver directly coupled to a specialized waveguide that combines the

functionality of long-throw and short-throw horns in a single acoustic device. The low

frequency section employs a high-output woofer that was developed using state-of-the-art,

computer-aided optimization to provide low distortion, high efficiency, and maximum

intelligibility at high sound pressure levels. The passive crossover implements an enhanced

fourth-order design with slopes of greater than 24 dB per octave for smooth off-axis response

and improved definition through the critical vocal range.

The EVC-1122-VI enclosure is constructed of 15-mm plywood and finished with EVCoat for

enhanced durability. The loudspeaker has been designed with M10 suspension points as well

as attachment points for an optional U-bracket. EVC series loudspeakers accept wire gauges

up to 10 AWG.

Constant directivity vs variable intensity

Most modern loudspeaker systems designed for installation are based on a constant-

directivity approach. They are designed to provide a consistent, smooth transition from the

low-frequency woofer to the high-frequency section. Constant-directivity systems typically

have symmetrical vertical coverage patterns and constant horizontal coverage. Systems built

around single or multiple constant-directivity loudspeakers are widely used in high quality

installed sound reinforcement systems. While many implementations deliver excellent

performance, one key drawback is that SPL can vary significantly over the audience area - from

front-to-back and left-to-right. The front-to-back variation can be minimized by tilting the horn

further back or by adding appropriately delayed fill speakers, but these remedies often result

in noticeable slap echo, decreased dynamic range, and poor intelligibility because of excessive

excitation of the reverberant field.

The EVC-1122-VI attacks these shortcomings by producing a wide near-field coverage angle

and a narrow far-field angle from a single loudspeaker system. The 12-inch woofer is installed

in the enclosure at an angle so that its central axis is directed toward the last row of the

audience, using the natural off-axis roll-off the driver to deliver more consistent level to every

seat. And the unique, asymmetrical waveguide replaces a short-throw/long-throw horn

combination to evenly cover the audience area with a single device. The resulting coverage

characteristic ensures a well-defined rectangular listening area, and the more gradual intensity

change compensates for the drop in SPL over the longer distance to the back of the room. The

size of the coverage area is determined by the height at which the loudspeaker is mounted, as

well as the vertical angle at which the system is aimed. This single-box solution reduces

material costs and labor time while increasing performance with higher intelligibility and more

uniform coverage.

In summary, the major advantages of the EVC-1122-VI are:

– Rectangular coverage pattern. Traditional waveguides deliver an elliptical pattern to the

floor. VI horns deliver a rectangular pattern, which helps to fill in the corners of the room.

No more costly delay lines.

– Even SPL front-to-back. The unique, patented throat and flare structure of the VI

waveguide delivers more consistent sound levels throughout the room, eliminating ear

strain at the back of the seating area and painful ears at the front.

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– Greater Intelligibility. VI waveguides deliver sound to fill only the floor plan, providing

uniform direct-field SPL and an order of magnitude less energy into the reverberant field.

This provides an increase in mid- to high-frequency intelligibility of 6 dB in most

applications.

– One horn replaces two. With VI technology we’ve eliminated the destructive interference

which occurs between long- and short-throw loudspeakers. We’ve also eliminated the

cost of a properly designed two-box system, which needs to include another power

amplifier channel for proper power control and impedance matching.

– Labor savings in the box. Variable Intensity systems will fly more conveniently and in less

time than many competitive products. In addition, less time is spent on aiming and

repositioning. This will save you additional money.

Finishes and colors available

EVC-1122-VI loudspeakers are finished in tough EVCoat. Unlike other EVC models, there are no

weatherized versions of the variable-intensity speaker. Like all EVC systems, the EVC-1122-VI

is available in black or white.

To find current user documentation visit our product related information at

www.electrovoice.com.

EVC Variable-Intensity Loudspeakers Planning the installation and aiming of the EVC-1122-VI loudspeaker | en 7

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3 Planning the installation and aiming of the EVC-1122-VI

loudspeaker

The remarkably even coverage of the EVC-1122-VI is due not only to the unique, compound

waveguide, but is also the result of the woofer mounting angle, the spacing between woofer

and horn, and the enclosure configuration. The speaker is designed to be mounted with the

waveguide on the bottom and the woofer facing forward. This means that when installed in

the proper orientation, the grille will cover the bottom and the angled front baffle. Another

visual indicator for confirming that the loudspeaker is oriented correctly is that the EV logo is

attached to the grille in front of the woofer, and should therefore be on the front face of the

loudspeaker when viewed head on. The largest rectangular surface of the speaker should face

upward. Note that the waveguide cannot be rotated, and the loudspeaker will only exhibit its

characteristic, predictable coverage when installed as described above.

The size of the rectangular area that the loudspeaker will cover is determined by its mounting

height, as measured from the bottom rear of the loudspeaker. The horizontal coverage pattern

will maintain a width that is approximately twice as wide as the mounting height

measurement; the vertical throw will be about three times the mounting height. There is a

small area of reduced coverage on the floor directly in front of the loudspeaker, which will

help increase the gain-before-feedback margin in the area where the presenter or musicians

will likely be located. Full coverage starts at a distance equal to 6/10 of the mounting height.

These combined coverage parameters can be approximated with a simple 3:2:1 rule that

makes it easy to estimate coverage during the design phase of a project.

You can extend or reduce the vertical throw by adjusting the aiming angle of the loudspeaker.

Note that this will change both the front and rear boundaries of the coverage area, since both

are affected by aiming. The new vertical coverage extremes are defined by the following

equations:

Beginning of vertical coverage = tan(31.0° ± tilt angle) x mounting height

Limit of vertical coverage = tan(71.6° ± tilt angle) x mounting height

These values can easily be determined with the help of a scientific calculator with

trigonometric functions. The tilt angle should be entered in degrees, but the mounting height

can be in either English or metric units. Vertical aiming has no material effect on horizontal

coverage over the audience area.

Figure3.1: Coverage area determined by mounting height and angle

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4 Installation

Warning!

This speaker shall not be exposed to dripping or splashing and no objects filled with liquids,

such as vases, shall be placed on the speaker.

Warning!

A safety cable must always be attached to one of the rigging points.

4.1 Tools list

The tools required to prepare the system for installation are:

– 3/16-inch (5 mm) flat blade screwdriver

– 6 mm Allen wrench

– Phillips #2 screwdriver

4.2 Preparing the EVC loudspeakers for installation

4.2.1 Unpacking and inspection

Carefully open the packaging and take out the loudspeaker. Inspect the loudspeaker's

enclosure for any damage that might have happened during transportation. Each loudspeaker

is examined and tested in detail before leaving the manufacturing site. Please inform the

transport company immediately if the loudspeaker shows any damage. Being the addressee,

you are the only person who can claim damages in transit. Keep the cardboard box and all

packaging materials for inspection by the transport company.

Keeping the cardboard box including all packing materials is also recommended, even if the

loudspeaker shows no external damage.

When shipping the loudspeaker, make sure to always use its original box and packaging

materials. By packing the loudspeaker exactly as it was packed by the manufacturer, you will

guarantee optimum protection from transport damage.

4.2.2 Scope of delivery

Keep the original invoice that states the purchase/delivery date in a safe place.

4.2.3 Recommended pre-installation procedures

For any sound system, certain checks made at the installer’s place of business can prevent

expensive on-site delays. EV recommends that you take the following steps:

1. Unpack all loudspeakers in the shop.

2. Check for proper model numbers.

3. Check the overall condition of the loudspeakers.

4. Check for continuity at the loudspeaker inputs.

Once you are on site and the loudspeakers are connected, it is a good idea to check again for

continuity at the power-amplifier end of each cable run.

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4.3 Working with mounting accessories

Warning!

Read and fully understand the manual and all safety instructions before attempting to

suspend this loudspeaker. Qualified professionals must carry out suspension and installation.

Follow all applicable local laws and regulations. Incorrect or improper suspension could

expose persons to serious injury or death. Carefully inspect loudspeakers and associated

hardware for defects or signs of damage before proceeding to suspend the speakers. Inspect

all components at least once per year or as local laws and regulations require. If any parts are

damaged or suspect, or if there is any doubt as to the proper functioning and safety of the

items, stop using them immediately. It is the responsibility of the person installing the

assembly to make sure the wall, ceiling, structure, and any attachments are capable of

supporting all objects suspended overhead. Any hardware used to suspend a loudspeaker not

provided by Electro-Voice is the responsibility of others. Electro-Voice assumes no liability for

any damage or personal injury resulting from improper use, installation, or operation of the

product.

4.3.1 Mounting with a U-bracket

Caution!

It is the installer's responsibility to determine and use the proper mounting hardware for the

wall construction type.

Disregarding this caution could result in damage to the product and personal injuries may

occur.

The EVC-1122-VI can be mounted on a wall or ceiling with an accessory U Bracket. The bracket

attaches to the sides of the loudspeaker in the same axis as the center of gravity to simplify

aiming and reduces the tendency to drift from the correct angle after installation.

Figure4.1: EVC U-bracket installed vertically

EVC U-Bracket EVC loudspeaker models

EVC-UB3 is an optional U-Bracket kit for

mounting a single EVC-1122-VI system to a

wall or ceiling.

Available in black or white:

– EVC-UB3-BLK

– EVC-UB3-WHT

The EVC-UB3 fits EVC-1122-VI models:

EVC-1122-VIB

EVC-1122-VIW

EVC-1122-VIBTEN54

EVC-1122-VIWTEN54

Tab.4.1: EVC U-Bracket mounting models

For more information, see EVC-UB3 Adjustable U-Mount Mounting Bracket Installation

Instructions (F.01U.349.928).

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4.3.2 Mounting with rigging points

The EVC-1122-VI can also be suspended from the three insert points on the top of the

loudspeaker enclosure. A safety cable must always be attached to one of the rigging points.

EVC loudspeakers are designed to be installed individually. There are no factory-approved

accessories for creating clusters by connecting an EVC loudspeaker to any other loudspeaker.

Figure4.2: Suspending EVC systems, including a safety cable

Eyebolt accessory kits

EVC loudspeakers do not ship with eyebolts. To suspend the speaker, it is necessary to order

one of the accessory eyebolt kits (sold separately).

– EBK-M10-3PACK: optional eyebolt kit, consisting of three M10 shoulder eyebolts and

three fender washers, used when eyebolts are needed to suspend any of the full-range

EVC loudspeakers. For more information see, EBK-M10 Eyebolt Attachment Kit

Installation Instructions (F.01U.303.870).

Installing the eyebolts

Caution!

No eyebolt should be mounted in the sides of an EVC enclosure in order to suspend a system.

Doing so may result in damage to the enclosure, leading to installation failure, and personal

injury.

Figure4.3: Eyebolts installed incorrectly in the sides of an enclosure in order to suspend it from above

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All hardware supplied by the user must be rated for overhead lifting to suspend the

loudspeaker system.

To install the eyebolts, do the following:

1. Remove the three M10 flat-head bolts (A) from the fly points on the top of the enclosure.

2. Screw the lifting eyebolt with fender washer into the threaded attachment point until

the fender washer makes contact with the enclosure.

Never install the eyebolt without the washer included with the eyebolt kit.

3. Finger tighten the eyebolt until the correct alignment position is obtained.

A maximum of one complete turn.

4. Install a safety cable.

Eyebolts orientated in the plane of pull

Caution!

Eyebolts must be fully seated and oriented in the plane of pull. Always use the fender washer

included with the eyebolt kit to distribute the load on the enclosure.

Excessive tightening of the eyebolt with a wrench, screwdriver or other tool, can result in a

system failure and possible injury.

Figure4.4: Fully seated eyebolts with washers, with correct orientation in the plane of pull (Correct; left,

Incorrect; right)

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5 Rigging strength ratings and safety factors

Working load limit and safety-factor deﬁnitions

The structural ratings for all EVC rigging components and loudspeaker systems are based on

test results in which parts were stressed to failure. Manufacturers typically present the

structural-strength ratings of mechanical components or systems as either the Working Load

Limit (WLL) or the ultimate-break strength. Electro-Voice chooses to present the structural-

load ratings of loudspeaker systems as the WLL. The WLL rating represents the maximum load

that should ever be applied to a mechanical component or system.

Warning!

Never exceed the limitations or maximum recommended working load for Electro-Voice

loudspeakers.

Disregarding this warning could result in serious injury or death.

The WLL for the rigging components and loudspeaker systems described in this manual is

calculated with a 10:1 safety factor, which exceeds the minimum 8:1 safety factor normally

specified by Electro-Voice. The safety factor is deﬁned as the ratio of the ultimate-break

strength divided by the WLL, where the ultimate-break strength represents the force at which

a part will structurally fail. For example, if a part has a WLL of 100 lb (45.4 kg), it would not

structurally fail until a force of at least 1,000 lb (453.6 kg) was applied, based on a 10:1 safety

factor. However, the user should never apply a load to that part that exceeds 100 lb (45.4 kg).

The safety factor provides a margin of safety above the WLL to accommodate normal dynamic

loading and normal wear.

Cautions for working load limits and safety factors

The WLL deﬁned by the manufacturer of any rigging component should never be exceeded.

Other manufacturers of rigging components may base their WLL on safety factors other than

10:1. For example, 5:1 safety factors are fairly common among rigging manufacturers because

many regulatory agencies call for a minimum safety factor of 5:1.

When an EV loudspeaker system is installed where local regulations only require a safety

factor of 5:1, Electro-Voice insists that the WLL of the loudspeaker rigging never be exceeded

and that an 10:1 safety factor be maintained.

The user is cautioned that some local regulations may require safety factors higher than 10:1.

In those circumstances, Electro-Voice insists that the user maintain the higher safety factor as

required by the local regulations throughout the entire loudspeaker installation. It is the

responsibility of the user to make sure that any loudspeaker installation meets all applicable

local, state or federal safety regulations.

Recommended practice for eyebolts

Eyebolts can be used to suspend individual loudspeakers when attached through the integral

M10 attachment points. It is a good idea to orient the suspending cable so that it hangs within

30° of the straight-up position in the plane of pull (left illustration), and within 15° against the

plane of pull (right illustration).

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Suspension line angle limits for individual eyebolts

0°

30°

90°

30°

90°

0°

15°

Figure5.1: Suspension line angle limits for individual eyebolts, both in plane of pull (left) and against plane

of pull (right)

A Above 90° NOT TO BE USED

B 0° to 30° recommended for main suspension line angle

C ±15° for all applications

D Above 15° NOT TO BE USED

Suspension line angles

Refer to WLL for M10 eyebolts and EVC loudspeakers and Suspension line angle limits for

individual eyebolts, page 13 for specific eyebolt angle and weight limitations when using

eyebolt suspension. These limits are not to be exceeded under any circumstances. If a safety

factor higher than 10:1 is required, the angle limits for each eyebolt may actually decrease to a

number less than what is shown in Suspension line angle limits for individual eyebolts, page 13.

Working load limit for M10 eyebolts and EVC loudspeaker

Model WLL Each Point (10:1) WLL Speaker (10:1)

EVC-1122-VITEN54 55 lb 55 lb

Tab.5.2: WLL for M10 eyebolts and EVC loudspeaker

Always ensure that the suspension line is in the plane of the eyebolt, as shown in Eyebolts

orientated in the plane of pull, page 11. Readjust the eyebolt during the installation if necessary

to maintain this alignment.

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Eyebolt suspension-line angle limit

60º

MAX

60º

MAX

Figure5.2: All-eyebolt suspension-line angle limit, independent (left) or bridled (right) suspension lines

Left-to-right all-eyebolt suspension angles

The suspended all-eyebolt cluster must be perpendicular (plumb) to within ±5°.

5º

MAX

Figure5.3: Left-to-right angle limits for an all-eyebolt suspension (visual angle shown exaggerated for

illustration purposes)

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6 Electrical connection

6.1 Connection

All EVC full-range systems are passive, meaning that the internal crossover/equalizer network

sends low frequencies to the woofer and high frequencies to the compression-driver/

waveguide combination. In addition, the network tailors the frequency response and level of

each individual driver so that the overall frequency response of the loudspeaker is essentially

flat over its intended range of operation. There is no bi-amp option for EVC full-range

loudspeakers.

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70.7V

LINE

37.5W

75W

150W

COM

100V

LINE

75W

150W

DON'T

USE

COM

Parallel Connectors

INPUT

TIGHTEN ALL

UNUSED

CONNECTOR

SCREWS

WARNING

EYEBOLTS MUST BE

FULLY SEATED AND

ORIENTED IN THE

PLANE OF PULL AS

SHOWN. ALWAYS

USE WASHERS TO

DISTRIBUTE SUS-

PENSION LOADS.

INCORRECT

CORRECT

! WARNING !

READ AND FULLY UNDERSTAND

THE MANUAL AND ALL SAFETY

INSTRUCTIONS BEFORE

ATTEMPTING TO SUSPEND THIS

LOUDSPEAKER.

SUSPENSION AND INSTALLATION MUST

BE CARRIED OUT BY QUALIFIED

PROFESSIONALS. FOLLOW ALL

APPLICABLE LOCAL LAWS AND

REGULATIONS.

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Figure6.1: EVC Variable-Intensity Loudspeaker rear panel

To connect the loudspeaker to the power source, do the following:

1. Connect the (-) input line to the COM input terminal.

2. Connect the (+) input line to the terminal corresponding to the desired wattage in

either the 70.7 V or 100 V column.

If connecting more than one speaker, each group of four terminals is electrically connected in

parallel to the directly adjacent group of four terminals. The wattages charted in these two

columns represent the wattage available from each of the three transformer taps at the

designated voltage.

The gland nut on the wiring cover is designed for cable jacket diameters of 6 mm to 12 mm in

diameter. Only use wiring with a jacket diameter within this range.

Notice!

Wiring installation must be performed by a skilled technician.

Optional speaker processing

Once an EVC loudspeaker is installed in a venue, a digital signal processor (DSP) will typically

be used to adjust the in-room frequency response. In addition, the DSP should be used to

provide the high-pass filters recommended to protect the EVC-1122-VITEN54 from overdrive at

frequencies below its operating range. Failure to do so could damage the low-frequency driver

if the system is subjected to high-level signals below its operating range. The recommended

high-pass filter frequencies for infrasonic protection of the EVC-1122-VITEN54 is:

Model Recommended high-pass frequency (minimum)

EVC-1122-

VITEN54

50 Hz, 4

-order high-pass (24dB/octave)

Tab.6.3: Recommended high-pass filter frequencies for infrasonic protection of EVC-1122-VITEN54 systems

The recommended high-pass filter can be implemented in a stand-alone DSP loudspeaker

controller or in the processing section of a DSP-enabled amplifier. L Series and C Series

amplifiers from Dynacord are recommended for use with EVC loudspeakers because they can

also implement model-specific processing that optimizes loudspeaker performance. EVC

loudspeaker settings can also be implemented in any IRIS-Net compatible digital signal

processor.

Notice!

Preset EVC1122-VI(FR)FIR v1.0.SPS is available for download from www.electrovoice.com

and is approved for use in EN54 installations.

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7 TK-150 transformer

High Pass Filter Requirements:

Caution!

Failure to use the proper high-pass filter may result in damage to the amplifier.

The TK-150 audio transformer is designed to be used with Butterworth 24 dB/octave high-pass

filter inserted in the signal chain at the input to the amplifier. The filter corner frequency

should be set at 50 Hz for full-range models. This filter, in conjunction with the Automatic

Saturation Compensation (ASC) feature, protects the amplifier from damage caused by

transformer saturation at low frequencies and allows any number of transformers to be driven

on the same 70V or 100V line, up to the rated power of the amplifier. At the same time, the

ASC circuit preserves the low-frequency extension of the system by adding incremental

filtering only to the extent required by the current level in the loudspeaker.

Notice!

Each group of four terminals is electrically connected in parallel to the group of four terminals

directly across from it.

The wattages charted in these two columns represent the wattage available from each of the

three transformer taps at the designated voltage.

70V 100V Z nom

Transformer: (Standard 50 Hz BW24

High-pass)

37.5 W 75 W 130 Ω

75 W 150 W 65 Ω

150 W Do Not Use 33 Ω

Tab.7.4: Transformer ratings and taps

Caution!

This transformer affects only the loudspeaker to which it is installed.

Improper connection may result in damage to the transformer, successive loudspeakers, the

driving amplifier or any combination of these units.

Caution!

When daisy chaining additional systems, connect the wires to the next system only to those

terminals directly opposite the input wires.

Improper connection may result in damage to the transformer, successive loudspeakers, the

driving amplifier or any combination thereof.

Notice!

Tighten all unused connector screws to prevent rattles.

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8 Technical data

Frequency response (-3 dB)

1, 3

: 70 Hz - 20 kHz

Frequency range (-10 dB)

1, 3

: 50 Hz - 25 kHz

Rec. high-pass frequency: 50 Hz

Passive crossover frequency: 1.6 kHz

Axial sensitivity

: 79 dB (1 W/4 m)

MAX SPL: 100.5 dB

Power handling

: 150 W (Continuous), 600 W (Peak)

LF transducer: EVS-12M

HF transducer: DH-3

Connectors: Dual four-pin 10 AWG Phoenix/Euro Block

screw-terminals

Enclosure: 15-mm plywood with EVCoat

Grille: 18 GA powder-coated steel with rotatable logo

Environmental: INDOOR ONLY

Suspension: (8) M10 suspension points

Color: Black or white

Dimensions (H x W x D): 528 mm x 411 mm x 648 mm

(20.78 in x 16.18 in x 25.50 in)

Net weight: 24.1 kg (53.1 lb)

Shipping weight: 26.8 kg (59.1 lb)

Full-space measurement.

Per EN-54 test standard.

With recommended preset.

20 en | Technical data EVC Variable-Intensity Loudspeakers

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Dimensions:

69°

63°

276.6 mm

[10.89 in]

411.0 mm

[16.18 in]

527.8 mm

[20.78 in]

647.6 mm

[25.50 in]

202.0 mm

[7.95 in]

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